Blu-duab tshav hom yog qhov kev cia siab tshaj plaws rau kev sau cov ntaub ntawv mus rau cov xov xwm kho qhov muag. Nws muaj tus naj npawb ntawm cov txiaj ntsig tseem ceeb uas tau tso cai Blu-duab tshav disc mus ua txoj haujlwm rau hauv ntu tseem ceeb ntawm kev ua lag luam, tshem tawm cov neeg sib tw.
Thawj tiam tsim kho qhov muag tawm
Ib qho tseem ceeb tshaj plaws hauv kev txhim kho ntawm cov ntaub ntawv nqa khoom yog lub npe hu ua optical media, zoo dua lub npe hu ua compact disc, uas yuav luag hloov kho cov ntawv sib nqus tsis sib thooj. Nkag mus rau, lawv tau kho dua tshiab cov ntaub ntawv xov xwm vinyl paub txog txij thaum yau, tsuas yog tsis muaj suab nrov, xoom thiab cov uas tau muab sau cia rau lawv, uas tau nyeem tsis yog siv rab koob, tab sis nrog cov kab xev laser nyias. Vim tias qhov tseeb ntawm cov kab teeb ci laser tau ntau thinner ntawm rab koob, nws thiaj li ua tiav los sau txog rau puas ntawm megabytes ntawm cov ntaub ntawv ntawm ib kaum ob xees. Cov ntsaws me me yog thawj tiam ntawm cov khoos phis tawm. Tom qab ntawd, cov twj siv los sau cov ntaub ntawv ntawm cov discs thiab CDs lawv tus kheej nrog kev rov ua dua tshiab tau mus muag.
Qhov thib ob tiam DVD muaj qhov tso qauv zoo dua li cov CDs. Lub sijhawm siv ntawm thaj chaw disk ntau yam khoom tau tshwm sim vim qhov tseeb tias lub tshuab hluav taws xob laser nqaj nrog lub dav dua ntais, qhov ntawd yog, nyias dua, tau tsim. Raws li qhov tshwm sim, cov ntaub ntawv ntau ntxiv tuaj yeem raug sau rau ntawm ib lub disc ntawm tib thaj chaw. Txawm tias ib-txheej DVD tuaj yeem tuav txog 4.5 gigabytes ntawm cov ntaub ntawv, thiab kev tsim cov multilayer ob tog sib npaug ua rau nws muaj peev xwm sau tau txog 16 gigabytes ntawm ib qho disc.
Cov theem tom ntej hauv kev tsim tawm ntawm kev tshaj tawm xov xwm yog HD DVD hom, uas yog, txhais cov DVD siab. Tsis zoo li cov hom xov xwm dhau los, thaum sau thiab nyeem HD DVD, tsis yog xim liab, tab sis siv violet laser siv, qhov ntev ntawm cov ntawv ntawd tseem luv dua, yog li ntawm 15 gigabytes ntawm cov ntaub ntawv tau sau rau ntawm ib-txheej 12-centimeter disc.
Cov txiaj ntsig ntawm Blu-duab tshav
Zoo li HD DVD, Blu-Ray yog tiam thib peb ntawm kev kho qhov muag. Nws tau tsim los ntawm cov tuam txhab sib tw nrog HD DVD makers. Xws li Blu-Ray, tib lub tshuab xiav-violet laser siv hauv HD DVD devices tau siv, tab sis qhov sib txawv tseem ceeb hauv lub disc nws tus kheej. Tag nrho peb tiam ntawm kho qhov muag tawm muaj ntawm polycarbonate puag, uas ib txheej tshwj xeeb tau thov, uas tau txais kev pabcuam rau cov ntaub ntawv sau cia thiab khaws cia. Cov txheej no tsis tiv taus cov tshuab puas, uas feem ntau ua rau kev puas tsuaj ntawm discs vim khawb los yog av. Hauv xyoo 2004, cov qauv tseem tshiab ntawm cov polymer txheej txheem tau tsim, uas tiv thaiv Blu-Ray discs los ntawm kev kho tshuab kev ntxhov siab, ua rau lawv muaj zog ntau dua thiab ruaj khov dua. Tsis tas li ntawd, qhov no ua rau nws txo qis tuab ntawm kev tiv thaiv txheej txheem rau lub sijhawm, uas, nyeg, ua rau nws tau sau txog 25 gigabytes ntawm ib qho disc.
Cov kev hloov tshiab no ua rau muaj qhov tseeb hais tias yuav luag txhua lub tuam txhab zaj duab xis hloov mus rau Blu-Ray tus qauv los ntawm 2008, thiab HD DVD txiag tsis kam tsim kho thev naus laus zis kom tsis txhob muaj "kev ua tsov rog". Ntxiv rau txhua yam nyob hauv Blu-Ray hom, ntau thev naus laus zis tau siv los tiv thaiv kev luam txhaum cai, uas, tau kawg, tau los ua ib qho kev sib cav ntxiv rau cov neeg tau txais kev pab tseem ceeb ntawm cov xov xwm - cov tuam txhab ua yeeb yaj kiab.
